Taylor Swift
The singer celebrates her 30th birthday onstage at Z100's Jingle Ball at Madison Square Garden in NYC.
Camila Cabello
The singer performs at Z100's Jingle Ball at Madison Square Garden in NYC.
Lizzo
The star performs at Z100's Jingle Ball at Madison Square Garden in NYC.
Jason Sudeikis & Olivia Wilde
The married couple appears at Z100's Jingle Ball at Madison Square Garden in NYC.
Jonas Brothers
The trio performs at Z100's Jingle Ball at Madison Square Garden in NYC.
Niall Horan
The singer performs at Z100's Jingle Ball at Madison Square Garden in NYC.
Drew Barrymore
The actress appears at Z100's Jingle Ball at Madison Square Garden in NYC.
Lizzo & Katie Holmes
The two appear together at Z100's Jingle Ball at Madison Square Garden in NYC.
Dan + Shay
The two perform at Z100's Jingle Ball at Madison Square Garden in NYC.
Lizzo
While rocking the red carpet, the "Good as Hell" singer sported scünci's limited edition "Kira Kira" crystal headband.
Halsey
The singer performs at Z100's Jingle Ball at Madison Square Garden in NYC.
Tina Fey & Reneé Rapp
The two appear onstage at Z100's Jingle Ball at Madison Square Garden in NYC.
Gigi Hadid
The model arrives at Z100's Jingle Ball at Madison Square Garden in NYC.
Taylor Swift
The singer performs at Z100's Jingle Ball at Madison Square Garden in NYC.
Martha Hunt
The model arrives at Z100's Jingle Ball at Madison Square Garden in NYC.
Sam Smith
One word: iconique.
Lizzo
Take a bow! The "Good as Hell" singer looks effortlessly elegant in her larger-than-life ensemble.
Billie Eilish
2020 vibes.
Katy Perry
The singer performs at 101.3 KDWB's Jingle Ball 2019, presented by Capital One, at Xcel Energy Center in St. Paul/Minneapolis, Minnesota.
Billie Eilish
The "Bad Guy" songstress looks like she's enjoying herself!
Lizzo
Behind-the-scenes moment!
Camila Cabello
The "Shameless" songstress is looking red hot, hot, hot.
Normani
The pop princess makes everyone green with envy with her bright lime ensemble.
Billie Eilish
The 17-year-old star waves to the crowd.